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WO2020248877A1 - Lentille optique et dispositif d'imagerie - Google Patents

Lentille optique et dispositif d'imagerie Download PDF

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Publication number
WO2020248877A1
WO2020248877A1 PCT/CN2020/094046 CN2020094046W WO2020248877A1 WO 2020248877 A1 WO2020248877 A1 WO 2020248877A1 CN 2020094046 W CN2020094046 W CN 2020094046W WO 2020248877 A1 WO2020248877 A1 WO 2020248877A1
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WO
WIPO (PCT)
Prior art keywords
lens
optical
optical lens
object side
image side
Prior art date
Application number
PCT/CN2020/094046
Other languages
English (en)
Chinese (zh)
Inventor
栾晓宇
姚波
王东方
谢前森
Original Assignee
宁波舜宇车载光学技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201910500024.6A external-priority patent/CN112068291B/zh
Priority claimed from CN201910499979.4A external-priority patent/CN112068290B/zh
Application filed by 宁波舜宇车载光学技术有限公司 filed Critical 宁波舜宇车载光学技术有限公司
Publication of WO2020248877A1 publication Critical patent/WO2020248877A1/fr
Priority to US17/455,946 priority Critical patent/US20220082793A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
    • G02B13/006—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element at least one element being a compound optical element, e.g. cemented elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components

Definitions

  • the present application relates to an optical lens and an imaging device including the optical lens. More specifically, the present application relates to an optical lens and an imaging device including seven lenses.
  • unmanned driving may become a trend of future automobile development.
  • a key technical problem of unmanned driving is how to obtain sufficiently accurate road information. Therefore, unmanned driving has unique requirements for various parts of the car, especially for information collection parts.
  • the wide-angle lens is suitable for use in automobiles due to its large field of view. Therefore, the industry expects a wide-angle lens with high imaging quality.
  • the vehicle-mounted lens in the automatic driving assistance system has special requirements.
  • the vehicle-mounted camera lens requires the front port diameter to be as small as possible, the light-passing ability is strong, and the Imaging clarity.
  • wide-angle lenses In order to achieve the definition of megapixels, wide-angle lenses usually use aspheric surfaces to correct aberrations including chromatic aberrations. By increasing the number of lenses to more than 7 to obtain high resolution, this will increase the volume and weight of the lens. It is not conducive to the miniaturization of the lens and at the same time will cause the cost to rise.
  • plastic lenses are mostly used to reduce cost and lightness.
  • the degree of plasticization is high because the thermal expansion and contraction characteristics of plastic lenses are difficult to overcome.
  • the lens power is matched and the material selection makes the temperature performance better A better realization, but the overall still cannot meet the increasingly stringent temperature requirements.
  • the image quality can also be improved by using a glass aspheric lens to meet the temperature performance requirements, but the glass aspheric manufacturing process is difficult and the cost is high.
  • This application provides an optical lens and an imaging device including the optical lens.
  • An aspect of the present application provides such an optical lens, which may include a first lens, a second lens, a third lens, a fourth lens, and a fifth lens in order from the object side to the image side along the optical axis. , The sixth lens and the seventh lens.
  • the first lens may have negative refractive power, the object side surface is convex, and the image side surface is concave; the second lens may have negative refractive power, and its image side surface is concave; the third lens may have negative refractive power;
  • the four lens can have positive refractive power, and its object side surface is convex;
  • the fifth lens can have positive refractive power, and its object side and image side surfaces are both convex;
  • the sixth lens can have negative refractive power, and its object side and image side are both convex. It is a concave surface; and the seventh lens may have a positive refractive power, and its object side surface is a convex surface.
  • the object side surface of the second lens may be convex.
  • the object side surface of the second lens may be concave.
  • the object side surface of the third lens may be a convex surface, and the image side surface may be a concave surface.
  • the object side surface of the third lens may be a concave surface, and the image side surface may be a convex surface.
  • both the object side and the image side of the third lens may be concave.
  • the image side surface of the fourth lens may be convex.
  • the image side surface of the fourth lens may be concave.
  • the image side surface of the seventh lens may be convex.
  • the image side surface of the seventh lens may be concave.
  • the fifth lens and the sixth lens can be cemented with each other to form a cemented lens.
  • the optical lens may have at least 3 aspherical lenses.
  • the second lens, the fourth lens and the seventh lens may all be aspherical lenses.
  • the on-axis distance d12 from the center of the image side surface of the first lens to the center of the object side surface of the second lens and the total optical length TTL of the optical lens may satisfy: d12/TTL ⁇ 0.25.
  • the maximum field angle FOV of the optical lens, the entire group focal length value F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: (FOV ⁇ F)/H ⁇ 45.
  • the on-axis distance d34 from the center of the image side of the third lens to the center of the object side of the fourth lens and the on-axis distance d45 from the center of the image side of the fourth lens to the center of the object side of the fifth lens satisfy: d34/ d45 ⁇ 1.6.
  • the maximum field angle FOV of the optical lens, the maximum light aperture D of the object side of the first lens corresponding to the maximum field angle of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens can satisfy : D/H/FOV ⁇ 0.025.
  • the total optical length of the optical lens TTL, the maximum field angle FOV of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens can satisfy: TTL/H/FOV ⁇ 0.035.
  • the opening angle under the maximum angle of view of the optical lens can satisfy: arctan(SAG2/d2) ⁇ 45, where d2 is the maximum clear aperture of the image side of the first lens corresponding to the maximum angle of view of the optical lens SAG2 is the sagittal height SG value of the image side surface of the first lens corresponding to the maximum field angle of the optical lens.
  • the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens may satisfy: 0.5 ⁇
  • the focal length value F7 of the seventh lens and the entire group focal length value F of the optical lens may satisfy: F7/F ⁇ 5.
  • the lens group length TL of the optical lens and the entire group focal length value F of the optical lens can satisfy: TL/F ⁇ 15.
  • the focal length value F2 of the second lens and the entire group focal length value F of the optical lens may satisfy: 2 ⁇
  • an optical lens which may include a first lens, a second lens, a third lens, a fourth lens, and a fifth lens in order from the object side to the image side along the optical axis.
  • Lens, sixth lens, and seventh lens are included in the first lens, the second lens, the third lens and the sixth lens.
  • the first lens, the second lens, the third lens and the sixth lens can all have negative refractive power
  • the fourth lens, the fifth lens and the seventh lens can all have positive refractive power
  • the fifth lens and the sixth lens Can be glued to each other to form a cemented lens
  • the total optical length of the optical lens TTL, the maximum field angle FOV of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens can satisfy: TTL/H/FOV ⁇ 0.035 .
  • the object side surface of the first lens may be a convex surface
  • the image side surface may be a concave surface
  • the object side surface of the second lens may be a convex surface
  • the image side surface may be a concave surface
  • both the object side and the image side of the second lens can be concave.
  • the object side surface of the third lens may be a convex surface, and the image side surface may be a concave surface.
  • the object side surface of the third lens may be a concave surface, and the image side surface may be a convex surface.
  • both the object side and the image side of the third lens may be concave.
  • both the object side surface and the image side surface of the fourth lens can be convex surfaces.
  • the object side surface of the fourth lens may be a convex surface
  • the image side surface may be a concave surface.
  • both the object side and the image side of the fifth lens can be convex.
  • both the object side surface and the image side surface of the sixth lens can be concave.
  • both the object side surface and the image side surface of the seventh lens can be convex surfaces.
  • the object side surface of the seventh lens may be a convex surface
  • the image side surface may be a concave surface.
  • the optical lens may have at least 3 aspherical lenses.
  • the second lens, the fourth lens and the seventh lens may all be aspherical lenses.
  • the on-axis distance d12 from the center of the image side surface of the first lens to the center of the object side surface of the second lens and the total optical length TTL of the optical lens may satisfy: d12/TTL ⁇ 0.25.
  • the maximum field angle FOV of the optical lens, the entire group focal length value F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: (FOV ⁇ F)/H ⁇ 45.
  • the on-axis distance d34 from the center of the image side of the third lens to the center of the object side of the fourth lens and the on-axis distance d45 from the center of the image side of the fourth lens to the center of the object side of the fifth lens satisfy: d34/ d45 ⁇ 1.6.
  • the maximum field angle FOV of the optical lens, the maximum light aperture D of the object side of the first lens corresponding to the maximum field angle of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens can satisfy : D/H/FOV ⁇ 0.025.
  • the opening angle under the maximum angle of view of the optical lens can satisfy: arctan(SAG2/d2) ⁇ 45, where d2 is the maximum clear aperture of the image side of the first lens corresponding to the maximum angle of view of the optical lens SAG2 is the sagittal height SG value of the image side surface of the first lens corresponding to the maximum field angle of the optical lens.
  • the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens may satisfy: 0.5 ⁇
  • the focal length value F7 of the seventh lens and the entire group focal length value F of the optical lens may satisfy: F7/F ⁇ 5.
  • the lens group length TL of the optical lens and the entire group focal length value F of the optical lens can satisfy: TL/F ⁇ 15.
  • the focal length value F2 of the second lens and the entire group focal length value F of the optical lens may satisfy: 2 ⁇
  • an imaging device which may include the optical lens according to the above-mentioned embodiment and an imaging element for converting an optical image formed by the optical lens into an electrical signal.
  • This application uses, for example, seven lenses.
  • the optical lens has high resolution, miniaturization, small front-end diameter, good temperature performance, and large size.
  • At least one of the angle of view (FOV can reach more than 180), telephoto and other beneficial effects.
  • the optical lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, and in order from the object side to the image side along the optical axis.
  • the sixth lens and the seventh lens are characterized in that: the first lens has negative refractive power, the object side surface is convex, and the image side surface is concave; the second lens has negative refractive power, and its image side surface is concave.
  • the third lens has negative refractive power; the fourth lens has positive refractive power, its object side is convex, and the image side is convex; the fifth lens has positive refractive power, and its object side is convex, like The side surface is convex; the sixth lens has negative power, the object side is concave, and the image side is concave; and the seventh lens has positive power, the object side is convex, and the image side is convex.
  • the fifth lens, the sixth lens, and the seventh lens may be cemented sequentially.
  • the object side surface of the second lens may be convex.
  • the object side surface of the second lens may be concave.
  • the object side surface of the third lens may be a concave surface and the image side surface of the third lens may be a convex surface.
  • the object side surface of the third lens may be a concave surface and the image side surface of the third lens may be a concave surface.
  • the object side surface of the third lens may be a convex surface and the image side surface of the third lens may be a concave surface.
  • At least three of the first lens to the seventh lens may be aspheric lenses.
  • the second lens, the third lens, and the fourth lens may be aspheric lenses.
  • the distance TL between the center of the object side of the first lens and the center of the image side of the seventh lens and the total effective focal length F of the optical lens may satisfy: TL/F ⁇ 15 .
  • the maximum field of view FOV can satisfy: TTL/H/FOV ⁇ 0.035.
  • the maximum clear aperture D of the object side of the first lens corresponding to the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the The maximum FOV of the optical lens can satisfy: D/H/FOV ⁇ 0.025.
  • the maximum field angle FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: (FOV ⁇ F) /H ⁇ 45.
  • the distance d12 from the center of the image side surface of the first lens to the center of the object side surface of the second lens is the same as the center of the object side surface of the first lens to the imaging of the optical lens
  • the distance between the surfaces TTL can satisfy: d12/TTL ⁇ 0.3.
  • the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens may satisfy: F4/F5 ⁇ 3.
  • the effective focal length F3 of the third lens and the radius of curvature R5 of the object side surface of the third lens may satisfy:
  • the effective focal length F2 of the second lens and the total effective focal length F of the optical lens may satisfy: 1.5 ⁇ F2/F ⁇ 4.5.
  • the combined focal length F567 of the fifth lens, the sixth lens, and the seventh lens and the total effective focal length F of the optical lens may satisfy: 2 ⁇ F567/F ⁇ 7.
  • the opening angle of the image side surface of the first lens under the maximum angle of view may be more than 45°.
  • the temperature coefficient of refractive index dn/dt(5) of the fifth lens and the temperature coefficient of refractive index dn/dt(6) of the sixth lens may satisfy: -3 ⁇ 10 -5 ⁇ dn /dt(5)+dn/dt(6) ⁇ -2 ⁇ 10 -5 .
  • Another aspect of the present application provides such an optical lens, which includes, in order from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens,
  • the sixth lens and the seventh lens are characterized in that: the first lens has negative refractive power; the second lens has negative refractive power; the third lens has negative refractive power; the fourth lens Has positive refractive power; the fifth lens has positive refractive power; the sixth lens has negative refractive power; and the seventh lens has positive refractive power, wherein the center of the object side of the first lens is The distance TL between the center of the image side surface of the seventh lens and the total effective focal length F of the optical lens satisfies: TL/F ⁇ 15.
  • the object side surface of the first lens may be a convex surface and the image side surface of the first lens may be a concave surface.
  • the object side surface of the second lens may be a convex surface and the image side surface of the second lens may be a concave surface.
  • the object side surface of the second lens may be a concave surface and the image side surface of the second lens may be a concave surface.
  • the object side surface of the third lens may be a concave surface and the image side surface of the third lens may be a convex surface.
  • the object side surface of the third lens may be a concave surface and the image side surface of the third lens may be a concave surface.
  • the object side surface of the third lens may be a convex surface and the image side surface of the third lens may be a concave surface.
  • the object side surface of the fourth lens may be convex and the image side surface of the fourth lens may be convex.
  • the object side surface of the fifth lens may be convex and the image side surface of the fifth lens may be convex.
  • the object side surface of the sixth lens may be a concave surface and the image side surface of the sixth lens may be a concave surface.
  • the object side surface of the seventh lens may be convex and the image side surface of the seventh lens may be convex.
  • the fifth lens, the sixth lens, and the seventh lens may be cemented sequentially.
  • At least three of the first lens to the seventh lens may be aspheric lenses.
  • the second lens, the third lens, and the fourth lens may be aspheric lenses.
  • the maximum field of view FOV is sufficient: TTL/H/FOV ⁇ 0.035.
  • the maximum clear aperture D of the object side of the first lens corresponding to the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the The maximum FOV of the optical lens can satisfy: D/H/FOV ⁇ 0.025.
  • the maximum field angle FOV of the optical lens, the total effective focal length F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: (FOV ⁇ F) /H ⁇ 45.
  • the distance d12 from the center of the image side surface of the first lens to the center of the object side surface of the second lens is the same as the center of the object side surface of the first lens to the imaging of the optical lens
  • the distance between the surfaces TTL can satisfy: d12/TTL ⁇ 0.3.
  • the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens may satisfy: F4/F5 ⁇ 3.
  • the effective focal length F3 of the third lens and the radius of curvature R5 of the object side surface of the third lens may satisfy:
  • the effective focal length F2 of the second lens and the total effective focal length F of the optical lens may satisfy: 1.5 ⁇ F2/F ⁇ 4.5.
  • the combined focal length F567 of the fifth lens, the sixth lens, and the seventh lens and the total effective focal length F of the optical lens may satisfy: 2 ⁇ F567/F ⁇ 7.
  • the opening angle of the image side surface of the first lens under the maximum angle of view may be more than 45°.
  • the temperature coefficient of refractive index dn/dt(5) of the fifth lens and the temperature coefficient of refractive index dn/dt(6) of the sixth lens may satisfy: -3 ⁇ 10 -5 ⁇ dn /dt(5)+dn/dt(6) ⁇ -2 ⁇ 10 -5 .
  • an imaging device which may include the optical lens according to the above-mentioned embodiment and an imaging element for converting an optical image formed by the optical lens into an electrical signal.
  • This application uses, for example, seven lenses.
  • the optical lens has a small aperture, high resolution, miniaturization, low cost, small CRA (ChiefRayAngle, chief ray angle), At least one beneficial effect such as good temperature performance, super large field of view and telephoto.
  • FIG. 1 is a schematic diagram showing the structure of an optical lens according to Embodiment 1 of the present application.
  • FIG. 2 is a schematic diagram showing the structure of an optical lens according to Embodiment 2 of the present application.
  • FIG. 3 is a schematic diagram showing the structure of an optical lens according to Embodiment 3 of the present application.
  • FIG. 4 is a schematic diagram showing the structure of an optical lens according to Embodiment 4 of the present application.
  • FIG. 5 is a schematic diagram showing the structure of an optical lens according to Embodiment 5 of the present application.
  • FIG. 6 is a schematic diagram showing the structure of an optical lens according to Embodiment 6 of the present application.
  • FIG. 7 is a schematic diagram showing the structure of an optical lens according to Embodiment 7 of the present application.
  • FIG. 8 is a schematic diagram showing the structure of an optical lens according to Embodiment 8 of the present application.
  • FIG. 9 is a schematic diagram showing the structure of an optical lens according to Embodiment 9 of the present application.
  • FIG. 10 is a schematic diagram showing the structure of an optical lens according to Embodiment 10 of the present application.
  • FIG. 11 is a schematic diagram showing the structure of an optical lens according to Embodiment 11 of the present application.
  • FIG. 12 is a schematic diagram showing the structure of an optical lens according to Embodiment 12 of the present application.
  • FIG. 13 is a schematic diagram showing the structure of an optical lens according to Embodiment 13 of the present application.
  • Fig. 14 schematically shows the semi-aperture d of the maximum clear aperture on the object side of the lens and its corresponding sagittal height Sg value SAG.
  • first, second, third, etc. are only used to distinguish one feature from another feature, and do not represent any restriction on the feature. Therefore, without departing from the teachings of the present application, the first lens discussed below may also be referred to as a second lens or a third lens.
  • the thickness, size, and shape of the lens have been slightly exaggerated for ease of description.
  • the shape of the spherical surface or aspherical surface shown in the drawings is shown by way of example. That is, the shape of the spherical surface or the aspheric surface is not limited to the shape of the spherical surface or the aspheric surface shown in the drawings.
  • the drawings are only examples and are not drawn strictly to scale.
  • the paraxial area refers to the area near the optical axis. If the lens surface is convex and the position of the convex surface is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the position of the concave surface is not defined, it means that the lens surface is at least in the paraxial region. Concave. The surface of each lens closest to the object is called the object side, and the surface of each lens closest to the imaging surface is called the image side.
  • the optical lens according to an exemplary embodiment of the present application includes, for example, seven lenses having refractive power, namely, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a seventh lens.
  • the seven lenses are arranged in order from the object side to the image side along the optical axis.
  • the optical lens according to the exemplary embodiment of the present application may further include a photosensitive element provided on the imaging surface.
  • the photosensitive element provided on the imaging surface may be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).
  • CCD photosensitive coupling element
  • CMOS complementary metal oxide semiconductor element
  • the first lens may have a negative refractive power
  • the object side surface may be a convex surface
  • the image side surface may be a concave surface.
  • the first lens is arranged in a meniscus shape with a convex surface facing the object side, which can collect light from a large field of view as much as possible and make the light enter the rear optical system. In practical applications, considering the outdoor installation and use environment of vehicle-mounted lenses, the lens will be in severe weather such as rain and snow. Arranging the first lens in a meniscus shape with a convex surface facing the object side can facilitate the sliding of water droplets and reduce The impact on the image quality of the lens.
  • the first lens may use a high refractive index material.
  • the refractive index Nd1 of the material of the first lens may satisfy: Nd1 ⁇ 1.65, so as to help reduce the front port diameter and improve the imaging quality.
  • the second lens can have a negative refractive power, and the object side can be convex or concave, and the image side can be concave.
  • the second lens appropriately compresses the light collected by the first lens to make the light trend a smooth transition.
  • setting the image side surface of the second lens to be a concave surface can help reduce the distance between the first lens and the second lens, and it is easier to shorten the total physical length of the lens and achieve miniaturization.
  • the third lens may have negative refractive power, the object side may be convex, and the image side may be concave; alternatively, the third lens may have negative refractive power, the object side may be concave, and the image side may be convex; Alternatively, the third lens may have negative refractive power, the object side surface may be concave, and the image side surface may be concave.
  • the third lens is set to have a negative focal length, which can balance the spherical aberration and positional chromatic aberration introduced by the first two lenses, and at the same time can help reduce the overall length of the optical system.
  • the fourth lens may have positive refractive power, the object side surface may be a convex surface, and the image side surface may optionally be a convex surface or a concave surface.
  • the fourth lens can converge the light, make the divergent light enter the rear smoothly, compress the light, and make the light transition smoothly.
  • the fifth lens can have positive refractive power, and both the object side and the image side can be convex.
  • the sixth lens can have negative refractive power, and both the object side and the image side can be concave.
  • the seventh lens can have a positive refractive power, the object side can be convex, and the image side can optionally be convex or concave.
  • the seventh lens is a converging lens, which enables the light to converge effectively and smoothly at the end, so that the light reaches the imaging surface smoothly, and reduces the overall weight and cost. .
  • each lens of the optical lens according to the exemplary embodiment of the present application may have different surface configuration combinations.
  • the object side surface of the first lens may be a convex surface, and the image side surface may be a concave surface.
  • the object side surface of the second lens may be convex, and the image side surface may be concave.
  • the object side surface of the third lens may be convex, and the image side surface may be concave.
  • Both the object side surface and the image side surface of the fourth lens can be convex.
  • Both the object side and the image side of the fifth lens can be convex.
  • Both the object side and the image side of the sixth lens can be concave.
  • Both the object side and the image side of the seventh lens can be convex.
  • the object side surface of the first lens may be a convex surface, and the image side surface may be a concave surface.
  • Both the object side surface and the image side surface of the second lens can be concave.
  • the object side surface of the third lens may be convex, and the image side surface may be concave.
  • Both the object side surface and the image side surface of the fourth lens can be convex.
  • Both the object side and the image side of the fifth lens can be convex.
  • Both the object side and the image side of the sixth lens can be concave.
  • Both the object side and the image side of the seventh lens can be convex.
  • the object side surface of the first lens may be a convex surface
  • the image side surface may be a concave surface.
  • Both the object side surface and the image side surface of the second lens can be concave.
  • the object side surface of the third lens can be concave, and the image side surface can be convex.
  • the object side surface of the fourth lens can be convex, and the image side surface can be concave.
  • Both the object side and the image side of the fifth lens can be convex.
  • Both the object side and the image side of the sixth lens can be concave.
  • the object side surface of the seventh lens can be convex, and the image side surface can be concave.
  • the object side surface of the first lens may be a convex surface
  • the image side surface may be a concave surface.
  • Both the object side surface and the image side surface of the second lens can be concave.
  • Both the object side and the image side of the third lens can be concave.
  • Both the object side surface and the image side surface of the fourth lens can be convex.
  • Both the object side and the image side of the fifth lens can be convex.
  • Both the object side and the image side of the sixth lens can be concave.
  • Both the object side and the image side of the seventh lens can be convex.
  • the object side surface of the first lens may be a convex surface, and the image side surface may be a concave surface.
  • the object side surface of the second lens may be convex, and the image side surface may be concave.
  • Both the object side and the image side of the third lens can be concave.
  • Both the object side surface and the image side surface of the fourth lens can be convex.
  • Both the object side and the image side of the fifth lens can be convex.
  • Both the object side and the image side of the sixth lens can be concave.
  • the object side surface of the seventh lens can be convex, and the image side surface can be concave.
  • a diaphragm for restricting the light beam may be provided between, for example, the third lens and the fourth lens to further improve the imaging quality of the lens.
  • the diaphragm is arranged between the third lens and the fourth lens, it can be beneficial to effectively converge the light entering the optical system, shorten the total length of the optical system, and reduce the aperture of the front and rear lens groups.
  • the position of the diaphragm disclosed here is only an example and not a limitation; in an alternative embodiment, the diaphragm may also be set in other positions according to actual needs.
  • the optical lens according to the present application may further include a filter disposed between the seventh lens and the imaging surface to filter light having different wavelengths; and may further include The protective glass between the filter and the imaging surface to prevent the internal components (for example, chips) of the optical lens from being damaged.
  • cemented lenses can be used to minimize or eliminate chromatic aberration.
  • the use of cemented lenses in optical lenses can improve image quality and reduce the reflection loss of light energy, thereby enhancing the clarity of lens imaging.
  • the use of cemented lenses can also simplify the assembly procedures in the lens manufacturing process.
  • the fifth lens and the sixth lens may be combined into a cemented lens by cementing the image side surface of the fifth lens and the object side surface of the sixth lens.
  • the cemented lens is a double cemented lens consisting of a positive lens (ie, the fifth lens) and a negative lens (ie, the sixth lens), wherein the positive lens has a lower refractive index, and the negative lens has a higher refractive index.
  • the ratio (relative to the positive lens) and the combination of high and low refractive index can facilitate the rapid transition of the front light and increase the aperture of the aperture to meet the needs of night vision.
  • the positive lens is arranged in the front and the negative lens is arranged in the rear, which can further converge the front light and then transition to the rear.
  • the doublet lens itself can achromatize by itself, reduce tolerance sensitivity, and can also leave some chromatic aberration to balance the chromatic aberration of the system.
  • the use of the double cemented lens can make the overall structure of the optical system compact, meet the requirements of miniaturization, and reduce the tolerance sensitivity issues such as tilt/eccentricity of the lens unit during the assembly process.
  • the on-axis distance d12 from the center of the image side surface of the first lens to the center of the object side surface of the second lens and the total optical length TTL of the optical lens may satisfy: d12/TTL ⁇ 0.25, more ideally, It can further satisfy d12/TTL ⁇ 0.2. Satisfying the conditional formula d12/TTL ⁇ 0.25 can make the light transition smoothly, which is beneficial to improve the image quality.
  • the maximum field angle FOV of the optical lens, the entire group focal length value F of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: (FOV ⁇ F)/H ⁇ 45. More ideally, (FOV ⁇ F)/H ⁇ 50 can be further satisfied. Satisfy the conditional formula (FOV ⁇ F)/H ⁇ 45, which can achieve large-angle resolution, which helps to improve the effect of the whole lens and take into account the super-large field of view and telephoto.
  • the on-axis distance d34 from the center of the image side of the third lens to the center of the object side of the fourth lens and the on-axis distance d45 from the center of the image side of the fourth lens to the center of the fifth lens It can satisfy: d34/d45 ⁇ 1.6, and more ideally, it can further satisfy d34/d45 ⁇ 1.45. By setting the distance between two adjacent lenses to be closer, it can help smooth transition of light.
  • the maximum field of view FOV of the optical lens, the maximum clear aperture D of the object side of the first lens corresponding to the maximum field of view of the optical lens, and the image height corresponding to the maximum field of view of the optical lens Among H, D/H/FOV ⁇ 0.025 can be satisfied, and more ideally, D/H/FOV ⁇ 0.02 can be further satisfied. Satisfy the conditional formula D/H/FOV ⁇ 0.025, which can ensure the small diameter of the front end.
  • the total optical length TTL of the optical lens, the maximum field angle FOV of the optical lens, and the image height H corresponding to the maximum field angle of the optical lens may satisfy: TTL/H/FOV ⁇ 0.035, More ideally, TTL/H/FOV ⁇ 0.03 can be further satisfied. Meet the conditional TTL/H/FOV ⁇ 0.035, which can achieve miniaturization. Compared with other lenses, the TTL is shorter under the same imaging surface under the same angle of view.
  • the opening angle under the maximum angle of view of the optical lens may satisfy: arctan(SAG2/d2) ⁇ 45, and more ideally, may further satisfy arctan(SAG2/d2) ⁇ 50, where d2 is
  • the maximum field angle of the optical lens corresponds to the half-aperture of the maximum clear aperture of the image side of the first lens, and SAG2 is the corresponding sagittal height. Satisfying the conditional arctan(SAG2/d2) ⁇ 45 can help increase the illuminance, reduce the distortion, and help improve the overall lens effect while taking into account the ultra-large field of view and telephoto.
  • the focal length value F4 of the fourth lens and the focal length value F5 of the fifth lens may satisfy: 0.5 ⁇
  • the focal length value F7 of the seventh lens and the entire group focal length value F of the optical lens may satisfy: F7/F ⁇ 5, and more ideally, F7/F ⁇ 4.6 may be further satisfied.
  • the length TL of the lens group of the optical lens and the focal length value F of the entire group of the optical lens may satisfy: TL/F ⁇ 15, and more ideally, TL/F ⁇ 14 may be further satisfied.
  • TL/F ⁇ 15 miniaturization can be achieved.
  • the focal length value F2 of the second lens and the entire group focal length value F of the optical lens may satisfy: 2 ⁇
  • the temperature coefficient of refractive index of the fifth lens dn/dt(5) and the temperature coefficient of refractive index of the sixth lens dn/dt(6) may satisfy: -3E-05 ⁇ dn/dt( 5)+dn/dt(6) ⁇ -1E-05.
  • the fifth lens and the sixth lens can effectively compensate for the effect of temperature changes on the focal length of the wide-angle lens, and further improve the stability of the resolution of the wide-angle lens at different temperatures.
  • the optical lens according to the present application has at least 3 aspherical lenses.
  • the second lens, the fourth lens and the seventh lens may all adopt aspherical lenses.
  • the characteristic of aspherical lenses is that the curvature varies continuously from the center of the lens to the periphery. Unlike spherical lenses with constant curvature from the center of the lens to the periphery, aspheric lenses have better radius of curvature characteristics, and have the advantages of improving distortion and astigmatism.
  • the use of aspheric lenses can eliminate as much as possible the aberrations that occur during imaging, thereby improving the imaging quality of the lens.
  • the first lens can also adopt an aspheric lens to further improve the resolution quality.
  • the seventh lens adopts an aspheric lens to reduce the optical path of the peripheral light to the imaging surface, and at the same time correct the off-axis point aberration of the system, and optimize the optical performance such as distortion and CRA. It should be understood that, in a specific application field, the optical lens according to the present application can appropriately increase the number of spherical or aspherical lenses.
  • the first lens may have a negative refractive power
  • the object side surface may be a convex surface
  • the image side surface may be a concave surface.
  • Arranging the first lens as a meniscus lens protruding to the object side helps to collect light from a large field of view into the rear optical system as much as possible, increase the amount of light passing, and at the same time help to achieve an overall large field of view.
  • the object side of the first lens is configured as a convex surface, which is conducive to the sliding of water droplets on the object side, thereby reducing the impact caused by bad weather such as rain and snow.
  • the first lens may be made of a high refractive index material having a refractive index of 1.65 or higher to reduce the front port diameter.
  • the second lens can have a negative refractive power, the object side can be convex or concave, and the image side can be concave. Arranging the second lens as a negative lens can appropriately compress the light collected by the first lens, so that the light trend transitions smoothly. In addition, the image side surface of the second lens is concave, which can also help reduce the distance between the first lens and the second lens, thereby helping to shorten the overall length of the optical lens to achieve miniaturization.
  • the third lens can have negative refractive power, the object side can be convex or concave, and the image side can be convex or concave.
  • Arranging the third lens as a negative lens can balance the spherical aberration and positional chromatic aberration introduced by the first two lenses, and at the same time help reduce the overall length of the optical system.
  • the fourth lens may have a positive refractive power, the object side surface may be a convex surface, and the image side surface may be a convex surface. This configuration of the fourth lens can smoothly enter the divergent light into the rear lens, compress the light, and make the light transition smoothly.
  • the fifth lens may have positive refractive power, the object side surface may be convex, and the image side surface may be convex.
  • the sixth lens may have negative refractive power, the object side surface may be concave, and the image side surface may be concave.
  • the seventh lens may have positive refractive power, the object side surface may be convex, and the image side surface may be convex.
  • a diaphragm for limiting the light beam may be provided between, for example, the fourth lens and the fifth lens to further improve the imaging quality of the lens.
  • the diaphragm When the diaphragm is arranged between the fourth lens and the fifth lens, it can effectively condense the light entering the optical system, shorten the total length of the optical system and reduce the aperture of the optical system.
  • the diaphragm may be disposed near the image side surface of the fourth lens.
  • the position of the diaphragm disclosed here is only an example and not a limitation; in an alternative embodiment, the diaphragm may also be set in other positions according to actual needs.
  • the optical lens according to the present application may further include a filter disposed between the seventh lens and the imaging surface to filter light having different wavelengths; and may further include The protective glass between the filter and the imaging surface to prevent the internal components (for example, chips) of the optical lens from being damaged.
  • cemented lenses can be used to minimize or eliminate chromatic aberration.
  • the use of cemented lenses in optical lenses can improve image quality and reduce the reflection loss of light energy, thereby enhancing the clarity of lens imaging.
  • the use of cemented lenses can also simplify the assembly procedures in the lens manufacturing process.
  • the fifth lens and the sixth lens may be cemented by cementing the image side surface of the fifth lens with the object side surface of the sixth lens, and cementing the image side surface of the sixth lens with the object side surface of the seventh lens.
  • the seventh lens Combined with the seventh lens to form a triplet lens.
  • the fifth lens has positive refractive power
  • the sixth lens has negative refractive power
  • the seventh lens has positive refractive power. Based on this, the light in front of the optical system can be smoothly transitioned to the seventh lens.
  • the seventh lens as a converging lens, can effectively and smoothly converge the light at the end, so that the light reaches the imaging surface smoothly, thereby reducing the total length of the optical system.
  • the triplet lens may have at least one of the following advantages: reducing the air gap between the three lenses, thereby reducing the overall length of the optical system; reducing the assembly parts between the fifth lens and the seventh lens, reducing The lens is sensitive to tolerances such as tilt/eccentricity generated in the assembly process, thereby reducing the process and reducing the cost; and reducing the loss of light caused by reflection between the lenses, thereby improving the illuminance.
  • Such a glued design shares the overall chromatic aberration correction of the system, effectively corrects aberrations, improves image understanding, and makes the overall optical system compact to meet the requirements of miniaturization.
  • the distance TL from the center of the object side surface of the first lens to the center of the image side surface of the seventh lens and the total effective focal length F of the optical lens may satisfy: TL/F ⁇ 15. More ideally, it can further satisfy: TL/F ⁇ 14. Satisfying the conditional expression TL/F ⁇ 15 can ensure the miniaturization of the optical system.
  • the distance between the center of the object side surface of the first lens and the imaging surface of the optical lens TTL, the image height H corresponding to the maximum angle of view of the optical lens, and the maximum angle of view FOV of the optical lens may be Meet: TTL/H/FOV ⁇ 0.035. More ideally, it can further satisfy: TTL/H/FOV ⁇ 0.03. Satisfy the conditional TTL/H/FOV ⁇ 0.035, which can ensure the miniaturization of the optical system. For example, compared with other lenses that do not satisfy the conditional expression, when the field angle size and the imaging surface size are the same, the optical lens of the exemplary embodiment of the present application that meets the conditional expression has a shorter TTL.
  • the maximum clear aperture D of the object side of the first lens corresponding to the maximum field angle of the optical lens, the image height H corresponding to the maximum field angle of the optical lens, and the maximum field of view of the optical lens Angle FOV can satisfy: D/H/FOV ⁇ 0.025. More ideally, it can further satisfy: D/H/FOV ⁇ 0.02. Satisfy the conditional formula D/H/FOV ⁇ 0.025, which can realize a smaller front port diameter.
  • the maximum field angle FOV of the optical lens, the total effective focal length F of the optical lens, and the maximum field angle of the optical lens corresponding to the image height H may satisfy: (FOV ⁇ F)/H ⁇ 45. More ideally, it can further satisfy: (FOV ⁇ F)/H ⁇ 47. Satisfy the conditional formula (FOV ⁇ F)/H ⁇ 45, which can realize a large-angle resolution, which helps to take into account the super-large field of view and telephoto characteristics.
  • the distance d12 between the center of the image side surface of the first lens and the center of the object side surface of the second lens and the distance between the center of the object side surface of the first lens and the imaging surface of the optical lens TTL may be Meet: d12/TTL ⁇ 0.3. More ideally, it can further satisfy: d12/TTL ⁇ 0.25. Satisfying the conditional formula d12/TTL ⁇ 0.3 can help reduce the optical aperture of the first lens.
  • the effective focal length F4 of the fourth lens and the effective focal length F5 of the fifth lens may satisfy: F4/F5 ⁇ 3. More ideally, it can further satisfy: 0.5 ⁇ F4/F5 ⁇ 2. Satisfying the conditional formula F4/F5 ⁇ 3 can help light transition smoothly between the fourth lens and the fifth lens.
  • the effective focal length F3 of the third lens and the curvature radius R5 of the object side surface of the third lens may satisfy:
  • the effective focal length F2 of the second lens and the total effective focal length F of the optical lens may satisfy: 1.5 ⁇ F2/F ⁇ 4.5. More ideally, it can further satisfy: 1.8 ⁇ F2/F ⁇ 4. Satisfying the conditional formula 1.5 ⁇ F2/F ⁇ 4.5, which can effectively condense large-angle light so that the light can smoothly enter the rear optical system.
  • the combined focal length F567 of the fifth lens, the sixth lens, and the seventh lens and the total effective focal length F of the optical lens may satisfy: 2 ⁇ F567/F ⁇ 7. More ideally, it can further satisfy: 2.5 ⁇ F567/F ⁇ 6.5. Satisfying the conditional expression 2 ⁇ F567/F ⁇ 7 can help eliminate chromatic aberration, achieve a long back focus, and reduce CRA.
  • the opening angle of the image side surface of the first lens at the maximum angle of view may be 45° or more.
  • This relationship can be expressed as: arctan(SAG2/d2) ⁇ 45°, where the number 2 represents the image side of the first lens.
  • Fig. 14 shows this angle ⁇ using the object side surface of a lens as an example.
  • d represents the half-aperture of the maximum clear aperture
  • SAG represents the corresponding Sg value.
  • the opening angle ⁇ of the object side surface of the lens shown in FIG. 14 at the maximum angle of view arctan (SAG/d). More ideally, it can be further satisfied: arctan(SAG2/d2) ⁇ 50°. Satisfying the conditional arctan(SAG2/d2) ⁇ 45° can help increase the illuminance, reduce distortion, and help to take into account the super-large field of view and telephoto characteristics.
  • the temperature coefficient of refractive index of the fifth lens dn/dt(5) and the temperature coefficient of refractive index dn/dt(6) of the sixth lens satisfy: -3 ⁇ 10 -5 ⁇ dn/dt(5 )+dn/dt(6) ⁇ -2 ⁇ 10 -5 .
  • the temperature coefficient of refractive index of the fifth lens dn/dt(5) represents the change of the refractive index of the material of the fifth lens with temperature.
  • the temperature coefficient of refractive index of the sixth lens dn/dt(6) represents the change of the refractive index of the material of the sixth lens with temperature.
  • the optical lens according to the present application has at least three aspherical lenses.
  • the second lens, the third lens, and the fourth lens can all be aspherical lenses.
  • the characteristic of aspherical lenses is that the curvature varies continuously from the center of the lens to the periphery.
  • aspheric lenses have better radius of curvature characteristics, and have the advantages of improving distortion and astigmatism.
  • the use of aspheric lenses can eliminate as much as possible the aberrations that occur during imaging, thereby improving the imaging quality of the lens.
  • the first lens can also adopt an aspheric lens to further improve the resolution quality.
  • the seventh lens adopts an aspheric lens to reduce the optical path of the peripheral light to the imaging surface, and at the same time correct the off-axis point aberration of the system, and optimize the optical performance such as distortion and CRA.
  • the optical lens according to the present application can appropriately increase the number of spherical or aspherical lenses.
  • the first lens to the seventh lens can all be aspherical lenses.
  • the first lens may be a glass lens.
  • the thermal expansion coefficient of the plastic lens is relatively large. When the temperature of the environment used by the lens changes greatly, the plastic lens will cause a large change in the optical back focus of the lens.
  • the use of glass lenses can reduce the impact of temperature on the optical back focus of the lens, but the cost is higher.
  • the first lens can be a glass aspheric lens to further improve the image quality and reduce the front port diameter.
  • the optical lens according to the present application can increase the number of glass lenses. For example, when focusing on the temperature performance of the optical lens, glass lenses can be used for the first lens to the seventh lens. , In order to ensure the stability of the optical performance at different temperatures; when the focus is on cost, glass-plastic combination or even all plastic lenses can be used to reduce costs.
  • the optical lens according to the above-mentioned embodiments of the present application can reduce the front port diameter and shorten the TTL by optimizing the shape of the lens, rationally distributing the optical power, and rationally selecting the lens material, thereby ensuring the miniaturization of the lens and improving the resolution.
  • the optical lens uses 7 lenses, can reach more than 4 million pixels, can achieve higher definition.
  • the optical lens has a small CRA, which prevents stray light from hitting the lens barrel when the rear end of the light exits, and can be well matched with, for example, automotive chips, without color cast and vignetting.
  • the optical lens Compared with the conventional wide-angle lens, the optical lens has a longer focal length, and the central area has a large angular resolution, which can improve the recognition of environmental objects and increase the detection area of the central part in a targeted manner.
  • the optical lens can adopt a full glass architecture, has good temperature performance, small changes in imaging effects at high and low temperatures, and stable image quality, which greatly improves the safety of automatic driving, which is conducive to most environments where vehicles are used. Therefore, the optical lens according to the foregoing embodiments of the present application can better meet the requirements of, for example, automotive applications.
  • the total optical length TTL of the optical lens used above refers to the on-axis distance from the center of the object side of the first lens to the center of the imaging surface; and the lens group length TL of the optical lens refers to the distance from the first lens The on-axis distance from the center of the object side of the lens to the center of the image side of the seventh lens of the last lens.
  • the number of lenses constituting the lens can be changed to obtain the various results and advantages described in this specification.
  • the optical lens is not limited to including seven lenses. If necessary, the optical lens may also include other numbers of lenses.
  • FIG. 1 shows a schematic structural diagram of an optical lens according to Embodiment 1 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the imaging side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power
  • the object side surface S3 is a convex surface
  • the image side surface S4 is a concave surface.
  • the third lens L3 is a meniscus lens with negative refractive power
  • the object side surface S5 is a convex surface
  • the image side surface S6 is a concave surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and the object side surface S8 and the image side surface S9 are both convex.
  • the fifth lens L5 is a double-convex lens with positive refractive power, and the object side surface S10 and the image side surface S11 are both convex.
  • the sixth lens L6 is a biconcave lens with negative refractive power, and the object side surface S11 and the image side surface S12 are both concave. Among them, the fifth lens L5 and the sixth lens L6 are cemented to form a cemented lens.
  • the seventh lens L7 is a biconvex lens with positive refractive power, and the object side surface S13 and the image side surface S14 are both convex.
  • the second lens L2, the fourth lens L4, and the seventh lens L7 are all aspherical lenses, and their respective object side and image side surfaces are aspherical.
  • the optical lens may further include a filter L8 having an object side surface S15 and an image side surface S16 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.
  • a stop STO may be provided between the third lens L3 and the fourth lens L4 to improve the imaging quality.
  • Table 1 shows the radius of curvature R and thickness T of each lens of the optical lens of Example 1 (it should be understood that T 1 is the central thickness of the first lens L1, and T 2 is the distance between the first lens L1 and the second lens L2.
  • T 1 is the central thickness of the first lens L1
  • T 2 is the distance between the first lens L1 and the second lens L2.
  • refractive index Nd and Abbe number Vd where the units of the radius of curvature R and the thickness T are millimeters (mm).
  • This embodiment uses seven lenses as an example.
  • the lens can be made with high resolution, miniaturization, and small front end. At least one of the beneficial effects of caliber, good temperature performance, super large field of view, and long coking.
  • Each aspheric surface type Z is defined by the following formula:
  • Z is the distance vector height from the apex of the aspheric surface when the aspheric surface is at a height of h along the optical axis direction;
  • k is the conic coefficient conic;
  • A, B, C, D, and E are all higher-order coefficients.
  • Table 2 below shows the conic coefficient k and higher order coefficients A, B, C, D, and E of the aspheric lens surfaces S3-S4, S8-S9, S13-S14 that can be used in Example 1.
  • Table 3 below shows the refractive index Nd1 of the material of the first lens L1 of Example 1, the on-axis distance d12 from the center of the image side surface S2 of the first lens L1 to the center of the object side surface S3 of the second lens L2, and the optical lens
  • the total optical length TTL (that is, the on-axis distance from the center of the object side S1 of the first lens L1 to the imaging surface IMA)
  • the maximum field angle of the optical lens corresponds to the maximum pass of the object side S1 of the first lens L1
  • Optical aperture D image height H corresponding to the maximum angle of view of the optical lens, maximum angle of view FOV of the optical lens, axis from the center of the image side surface S6 of the third lens L3 to the center of the object side surface S8 of the fourth lens L4
  • FIG. 2 shows a schematic structural diagram of an optical lens according to Embodiment 2 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the imaging side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power
  • the object side surface S3 is a convex surface
  • the image side surface S4 is a concave surface.
  • the third lens L3 is a meniscus lens with negative refractive power
  • the object side surface S5 is a convex surface
  • the image side surface S6 is a concave surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and the object side surface S8 and the image side surface S9 are both convex.
  • the fifth lens L5 is a double-convex lens with positive refractive power, and the object side surface S10 and the image side surface S11 are both convex.
  • the sixth lens L6 is a biconcave lens with negative refractive power, and the object side surface S11 and the image side surface S12 are both concave. Among them, the fifth lens L5 and the sixth lens L6 are cemented to form a cemented lens.
  • the seventh lens L7 is a biconvex lens with positive refractive power, and the object side surface S13 and the image side surface S14 are both convex.
  • the second lens L2, the third lens L3, the fourth lens L4, and the seventh lens L7 are all aspherical lenses, and their respective object and image sides are aspherical.
  • the optical lens may further include a filter L8 having an object side surface S15 and an image side surface S16 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.
  • a stop STO may be provided between the third lens L3 and the fourth lens L4 to improve the imaging quality.
  • Table 4 shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 2, where the units of the radius of curvature R and the thickness T are millimeters (mm).
  • Table 5 shows the conic coefficient k and the higher order coefficients A, B, C, D, and E that can be used for the aspheric lens surfaces S3-S6, S8-S9, S13-S14 in Example 2.
  • Table 6 below shows the refractive index Nd1 of the material of the first lens L1 of Example 2, the on-axis distance d12 from the center of the image side surface S2 of the first lens L1 to the center of the object side surface S3 of the second lens L2, and the optical lens
  • FIG. 3 shows a schematic structural diagram of an optical lens according to Embodiment 3 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the imaging side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power
  • the object side surface S3 is a convex surface
  • the image side surface S4 is a concave surface.
  • the third lens L3 is a meniscus lens with negative refractive power
  • the object side surface S5 is a convex surface
  • the image side surface S6 is a concave surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and the object side surface S8 and the image side surface S9 are both convex.
  • the fifth lens L5 is a double-convex lens with positive refractive power, and the object side surface S10 and the image side surface S11 are both convex.
  • the sixth lens L6 is a biconcave lens with negative refractive power, and the object side surface S11 and the image side surface S12 are both concave. Among them, the fifth lens L5 and the sixth lens L6 are cemented to form a cemented lens.
  • the seventh lens L7 is a biconvex lens with positive refractive power, and the object side surface S13 and the image side surface S14 are both convex.
  • the second lens L2, the fourth lens L4, and the seventh lens L7 are all aspherical lenses, and their respective object side and image side surfaces are aspherical.
  • the optical lens may further include a filter L8 having an object side surface S15 and an image side surface S16 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.
  • a stop STO may be provided between the third lens L3 and the fourth lens L4 to improve the imaging quality.
  • Table 7 shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 3, where the units of the radius of curvature R and the thickness T are millimeters (mm).
  • Table 8 shows the conic coefficient k and higher order coefficients A, B, C, D, and E that can be used for the aspheric lens surfaces S3-S4, S8-S9, S13-S14 in Example 3.
  • Table 9 below shows the refractive index Nd1 of the material of the first lens L1 of Example 3, the on-axis distance d12 from the center of the image side surface S2 of the first lens L1 to the center of the object side surface S3 of the second lens L2, and the optical lens
  • FIG. 4 shows a schematic structural diagram of an optical lens according to Embodiment 4 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the imaging side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a biconcave lens with negative refractive power, and the object side surface S3 and the image side surface S4 are both concave.
  • the third lens L3 is a meniscus lens with negative refractive power
  • the object side surface S5 is a convex surface
  • the image side surface S6 is a concave surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and the object side surface S8 and the image side surface S9 are both convex.
  • the fifth lens L5 is a double-convex lens with positive refractive power, and the object side surface S10 and the image side surface S11 are both convex.
  • the sixth lens L6 is a biconcave lens with negative refractive power, and the object side surface S11 and the image side surface S12 are both concave. Among them, the fifth lens L5 and the sixth lens L6 are cemented to form a cemented lens.
  • the seventh lens L7 is a biconvex lens with positive refractive power, and the object side surface S13 and the image side surface S14 are both convex.
  • the second lens L2, the fourth lens L4, and the seventh lens L7 are all aspherical lenses, and their respective object side and image side surfaces are aspherical.
  • the optical lens may further include a filter L8 having an object side surface S15 and an image side surface S16 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.
  • a stop STO may be provided between the third lens L3 and the fourth lens L4 to improve the imaging quality.
  • Table 10 shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 4, where the units of the radius of curvature R and the thickness T are millimeters (mm).
  • Table 11 shows the conic coefficient k and higher order term coefficients A, B, C, D, and E that can be used for the aspheric lens surfaces S3-S4, S8-S9, S13-S14 in Example 4.
  • Table 12 below shows the refractive index Nd1 of the material of the first lens L1 of Example 4, the on-axis distance d12 from the center of the image side surface S2 of the first lens L1 to the center of the object side surface S3 of the second lens L2, and the optical lens
  • FIG. 5 shows a schematic structural diagram of an optical lens according to Embodiment 5 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the imaging side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a biconcave lens with negative refractive power, and the object side surface S3 and the image side surface S4 are both concave.
  • the third lens L3 is a meniscus lens with negative refractive power, and its object side surface S5 is a concave surface, and the image side surface S6 is a convex surface.
  • the fourth lens L4 is a meniscus lens with positive refractive power, and its object side surface S8 is a convex surface, and the image side surface S9 is a concave surface.
  • the fifth lens L5 is a double-convex lens with positive refractive power, and the object side surface S10 and the image side surface S11 are both convex.
  • the sixth lens L6 is a biconcave lens with negative refractive power, and the object side surface S11 and the image side surface S12 are both concave. Among them, the fifth lens L5 and the sixth lens L6 are cemented to form a cemented lens.
  • the seventh lens L7 is a meniscus lens with positive refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the second lens L2, the fourth lens L4, and the seventh lens L7 are all aspherical lenses, and their respective object side and image side surfaces are aspherical.
  • the optical lens may further include a filter L8 having an object side surface S15 and an image side surface S16 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.
  • a stop STO may be provided between the third lens L3 and the fourth lens L4 to improve the imaging quality.
  • Table 13 below shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 5, wherein the units of the radius of curvature R and the thickness T are millimeters (mm).
  • Table 14 below shows the conic coefficient k and the higher order term coefficients A, B, C, D, and E that can be used for the aspheric lens surfaces S3-S4, S8-S9, S13-S14 in Example 5.
  • Table 15 below shows the refractive index Nd1 of the material of the first lens L1 of Example 5, the on-axis distance d12 from the center of the image side surface S2 of the first lens L1 to the center of the object side surface S3 of the second lens L2, and the optical lens
  • FIG. 6 shows a schematic structural diagram of an optical lens according to Embodiment 6 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the imaging side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a biconcave lens with negative refractive power, and the object side surface S3 and the image side surface S4 are both concave.
  • the third lens L3 is a biconcave lens with negative refractive power, and the object side surface S5 and the image side surface S6 are both concave.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and the object side surface S8 and the image side surface S9 are both convex.
  • the fifth lens L5 is a double-convex lens with positive refractive power, and the object side surface S10 and the image side surface S11 are both convex.
  • the sixth lens L6 is a biconcave lens with negative refractive power, and the object side surface S11 and the image side surface S12 are both concave. Among them, the fifth lens L5 and the sixth lens L6 are cemented to form a cemented lens.
  • the seventh lens L7 is a biconvex lens with positive refractive power, and the object side surface S13 and the image side surface S14 are both convex.
  • the second lens L2, the fourth lens L4, and the seventh lens L7 are all aspherical lenses, and their respective object side and image side surfaces are aspherical.
  • the optical lens may further include a filter L8 having an object side surface S15 and an image side surface S16 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.
  • a stop STO may be provided between the third lens L3 and the fourth lens L4 to improve the imaging quality.
  • Table 16 below shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 6, wherein the units of the radius of curvature R and the thickness T are millimeters (mm).
  • Table 17 below shows the conic coefficient k and higher order term coefficients A, B, C, D, and E that can be used for the aspheric lens surfaces S3-S4, S8-S9, S13-S14 in Example 6.
  • Table 18 below shows the refractive index Nd1 of the material of the first lens L1 of Example 6, the on-axis distance d12 from the center of the image side surface S2 of the first lens L1 to the center of the object side surface S3 of the second lens L2, and the optical lens
  • FIG. 7 shows a schematic structural diagram of an optical lens according to Embodiment 7 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the imaging side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power
  • the object side surface S3 is a convex surface
  • the image side surface S4 is a concave surface.
  • the third lens L3 is a biconcave lens with negative refractive power, and the object side surface S5 and the image side surface S6 are both concave.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and the object side surface S8 and the image side surface S9 are both convex.
  • the fifth lens L5 is a double-convex lens with positive refractive power, and the object side surface S10 and the image side surface S11 are both convex.
  • the sixth lens L6 is a biconcave lens with negative refractive power, and the object side surface S11 and the image side surface S12 are both concave. Among them, the fifth lens L5 and the sixth lens L6 are cemented to form a cemented lens.
  • the seventh lens L7 is a meniscus lens with positive refractive power
  • the object side surface S13 is a convex surface
  • the image side surface S14 is a concave surface.
  • the second lens L2, the fourth lens L4, and the seventh lens L7 are all aspherical lenses, and their respective object side and image side surfaces are aspherical.
  • the optical lens may further include a filter L8 having an object side surface S15 and an image side surface S16 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through the surfaces S1 to S16 and is finally imaged on the imaging surface IMA.
  • a stop STO may be provided between the third lens L3 and the fourth lens L4 to improve the imaging quality.
  • Table 19 below shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 7, wherein the units of the radius of curvature R and the thickness T are millimeters (mm).
  • Table 20 below shows the conic coefficient k and the higher order term coefficients A, B, C, D, and E that can be used for the aspheric lens surfaces S3-S4, S8-S9, S13-S14 in Example 7.
  • Table 21 below shows the refractive index Nd1 of the material of the first lens L1 of Example 7, the on-axis distance d12 from the center of the image side surface S2 of the first lens L1 to the center of the object side surface S3 of the second lens L2, and the optical lens
  • Example 1 to Example 7 respectively satisfy the relationships shown in Table 22 below.
  • FIG. 8 shows a schematic structural diagram of an optical lens according to Embodiment 8 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the image side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens L3 is a meniscus lens with negative refractive power, and its object side surface S5 is a concave surface, and the image side surface S6 is a convex surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and its object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.
  • the fifth lens L5 is a biconvex lens with positive refractive power, and the object side surface S10 is convex, and the image side surface S11 is convex.
  • the sixth lens L6 is a biconcave lens with negative refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a concave surface.
  • the seventh lens L7 is a biconvex lens with positive refractive power, the object side surface S12 is a convex surface, and the image side surface S13 is a convex surface.
  • the fifth lens L5, the sixth lens L6, and the seventh lens L7 may be cemented to form a cemented lens.
  • the optical lens may further include a stop STO, and the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality.
  • the stop STO may be disposed close to the image side surface S8 of the fourth lens L4.
  • the object side surface and the image side surface of the second lens L2, the third lens L3, and the fourth lens L4 may be aspherical.
  • the image side surface S13 of the seventh lens L7 may be aspherical.
  • the optical lens may further include a filter L8 having an object side surface S14 and an image side surface S15 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through each surface S1 to S15 and is finally imaged on the imaging surface IMA.
  • Table 23 shows the radius of curvature R and thickness T of each lens of the optical lens of Example 8 (it should be understood that the thickness T of the row where S1 is the center thickness of the first lens L1, and the thickness T of the row where S2 is the first lens The air space between L1 and second lens L2, and so on), refractive index Nd, and Abbe number Vd.
  • This embodiment uses seven lenses as an example.
  • the lens can be made with high resolution, miniaturization, and small front end. At least one of the beneficial effects of caliber, small CRA, good temperature performance, super large field of view, and long coking.
  • Table 24 shows the conic coefficient K and the higher-order coefficients A, B, C, D, and E that can be used for the aspheric lens surface in Example 8.
  • the definition of the face number in Table 24 is the same as that in Table 23.
  • FIG. 9 shows a schematic structural diagram of an optical lens according to Embodiment 9 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the image side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens L3 is a meniscus lens with negative refractive power, and its object side surface S5 is a concave surface, and the image side surface S6 is a convex surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and its object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.
  • the fifth lens L5 is a biconvex lens with positive refractive power, and its object side surface S10 is a convex surface, and the image side surface S11 is a convex surface.
  • the sixth lens L6 is a biconcave lens with negative refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a concave surface.
  • the seventh lens L7 is a biconvex lens with positive refractive power
  • the object side surface S12 is a convex surface
  • the image side surface S13 is a convex surface.
  • the fifth lens L5, the sixth lens L6, and the seventh lens L7 may be cemented to form a cemented lens.
  • the optical lens may further include a stop STO, and the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality.
  • the stop STO may be disposed close to the image side surface S8 of the fourth lens L4.
  • the object side surface and the image side surface of the second lens L2, the third lens L3, and the fourth lens L4 may be aspherical.
  • the image side surface S13 of the seventh lens L7 may be aspherical.
  • the optical lens may further include a filter L8 having an object side surface S14 and an image side surface S15 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through each surface S1 to S15 and is finally imaged on the imaging surface IMA.
  • Table 25 shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 9.
  • Table 26 shows the conic coefficient K and the higher-order coefficients A, B, C, D, and E that can be used for the aspheric lens surface in Example 9.
  • the definition of the face number in Table 26 is the same as that in Table 25.
  • FIG. 10 shows a schematic structural diagram of an optical lens according to Embodiment 10 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the image side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens L3 is a meniscus lens with negative refractive power, and its object side surface S5 is a concave surface, and the image side surface S6 is a convex surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and its object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.
  • the fifth lens L5 is a biconvex lens with positive refractive power, and its object side surface S10 is a convex surface, and the image side surface S11 is a convex surface.
  • the sixth lens L6 is a biconcave lens with negative refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a concave surface.
  • the seventh lens L7 is a biconvex lens with positive refractive power
  • the object side surface S12 is a convex surface
  • the image side surface S13 is a convex surface.
  • the fifth lens L5, the sixth lens L6, and the seventh lens L7 may be cemented to form a cemented lens.
  • the optical lens may further include a stop STO, and the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality.
  • the stop STO may be disposed close to the image side surface S8 of the fourth lens L4.
  • the object side surface and the image side surface of the second lens L2, the third lens L3, and the fourth lens L4 may be aspherical.
  • the image side surface S13 of the seventh lens L7 may be aspherical.
  • the optical lens may further include a filter L8 having an object side surface S14 and an image side surface S15 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through each surface S1 to S15 and is finally imaged on the imaging surface IMA.
  • Table 27 shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 10.
  • Table 28 shows the conic coefficient K and the higher order term coefficients A, B, C, D, and E that can be used for the aspheric lens surface in Example 10.
  • the definition of the face number in Table 28 is the same as that in Table 27.
  • FIG. 11 shows a schematic structural diagram of an optical lens according to Embodiment 11 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the image side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a biconcave lens with negative refractive power, the object side surface S3 is a concave surface, and the image side surface S4 is a concave surface.
  • the third lens L3 is a meniscus lens with negative refractive power, and its object side surface S5 is a concave surface, and the image side surface S6 is a convex surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and its object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.
  • the fifth lens L5 is a biconvex lens with positive refractive power, and its object side surface S10 is a convex surface, and the image side surface S11 is a convex surface.
  • the sixth lens L6 is a biconcave lens with negative refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a concave surface.
  • the seventh lens L7 is a biconvex lens with positive refractive power
  • the object side surface S12 is a convex surface
  • the image side surface S13 is a convex surface.
  • the fifth lens L5, the sixth lens L6, and the seventh lens L7 may be cemented to form a cemented lens.
  • the optical lens may further include a stop STO, and the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality.
  • the stop STO may be disposed close to the image side surface S8 of the fourth lens L4.
  • the object side surface and the image side surface of the second lens L2, the third lens L3, and the fourth lens L4 may be aspherical.
  • the image side surface S13 of the seventh lens L7 may be aspherical.
  • the optical lens may further include a filter L8 having an object side surface S14 and an image side surface S15 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through each surface S1 to S15 and is finally imaged on the imaging surface IMA.
  • Table 29 shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 11.
  • Table 30 shows the conic coefficient K and the higher order term coefficients A, B, C, D, and E that can be used for the aspheric lens surface in Example 11.
  • the definition of the face number in Table 30 is the same as that in Table 29.
  • FIG. 12 shows a schematic structural diagram of an optical lens according to Embodiment 12 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the image side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens L3 is a biconcave lens with negative refractive power, the object side surface S5 is a concave surface, and the image side surface S6 is a concave surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and its object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.
  • the fifth lens L5 is a biconvex lens with positive refractive power, and its object side surface S10 is a convex surface, and the image side surface S11 is a convex surface.
  • the sixth lens L6 is a biconcave lens with negative refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a concave surface.
  • the seventh lens L7 is a biconvex lens with positive refractive power
  • the object side surface S12 is a convex surface
  • the image side surface S13 is a convex surface.
  • the fifth lens L5, the sixth lens L6, and the seventh lens L7 may be cemented to form a cemented lens.
  • the optical lens may further include a stop STO, and the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality.
  • the stop STO may be disposed close to the image side surface S8 of the fourth lens L4.
  • the object side surface and the image side surface of the second lens L2, the third lens L3, and the fourth lens L4 may be aspherical.
  • the image side surface S13 of the seventh lens L7 may be aspherical.
  • the optical lens may further include a filter L8 having an object side surface S14 and an image side surface S15 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through each surface S1 to S15 and is finally imaged on the imaging surface IMA.
  • Table 31 shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 12.
  • Table 32 shows the conic coefficient K and the higher-order coefficients A, B, C, D, and E that can be used for the aspheric lens surface in Example 11.
  • the definition of the face number in Table 32 is the same as that in Table 31.
  • FIG. 13 shows a schematic structural diagram of an optical lens according to Embodiment 13 of the present application.
  • the optical lens includes a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6 in order from the object side to the image side along the optical axis. And the seventh lens L7.
  • the first lens L1 is a meniscus lens with negative refractive power, and its object side surface S1 is a convex surface, and the image side surface S2 is a concave surface.
  • the second lens L2 is a meniscus lens with negative refractive power, the object side surface S3 is a convex surface, and the image side surface S4 is a concave surface.
  • the third lens L3 is a meniscus lens with negative refractive power, and the object side surface S5 is a convex surface, and the image side surface S6 is a concave surface.
  • the fourth lens L4 is a biconvex lens with positive refractive power, and its object side surface S7 is a convex surface, and the image side surface S8 is a convex surface.
  • the fifth lens L5 is a biconvex lens with positive refractive power, and its object side surface S10 is a convex surface, and the image side surface S11 is a convex surface.
  • the sixth lens L6 is a biconcave lens with negative refractive power, the object side surface S11 is a concave surface, and the image side surface S12 is a concave surface.
  • the seventh lens L7 is a biconvex lens with positive refractive power
  • the object side surface S12 is a convex surface
  • the image side surface S13 is a convex surface.
  • the fifth lens L5, the sixth lens L6, and the seventh lens L7 may be cemented to form a cemented lens.
  • the optical lens may further include a stop STO, and the stop STO may be disposed between the fourth lens L4 and the fifth lens L5 to improve imaging quality.
  • the stop STO may be disposed close to the image side surface S8 of the fourth lens L4.
  • the object side surface and the image side surface of the second lens L2, the third lens L3, and the fourth lens L4 may be aspherical.
  • the image side surface S13 of the seventh lens L7 may be aspherical.
  • the optical lens may further include a filter L8 having an object side surface S14 and an image side surface S15 and/or a protective lens L8'.
  • Filter L8 can be used to correct color deviation.
  • the protective lens L8' can be used to protect the image sensor chip located on the imaging surface IMA. The light from the object sequentially passes through each surface S1 to S15 and is finally imaged on the imaging surface IMA.
  • Table 33 shows the radius of curvature R, thickness T, refractive index Nd, and Abbe number Vd of each lens of the optical lens of Example 13.
  • the following Table 34 shows the conic coefficient K and the higher-order coefficients A, B, C, D, and E that can be used for the aspheric lens surface in Example 13.
  • the definition of the face number in Table 34 is the same as that in Table 33.
  • Example 8 to Example 13 respectively satisfy the relationships shown in Table 35 below.
  • Table 35 the units of TL, F, TTL, H, D, d12, F2, F3, F4, F5, R5, F567 are millimeters (mm), and the units of FOV and arctan (SAG2/d2) are degrees (° ).
  • the present application also provides an imaging device, which may include the optical lens according to the above-mentioned embodiment of the present application and an imaging element for converting an optical image formed by the optical lens into an electrical signal.
  • the imaging element can be a photosensitive coupling element (CCD) or a complementary metal oxide semiconductor element (CMOS).
  • CMOS complementary metal oxide semiconductor element
  • the imaging device may be an independent imaging device such as a detection range camera, or an imaging module integrated on the detection range device.
  • the imaging device may also be an independent imaging device such as a vehicle-mounted camera, or an imaging module integrated on, for example, a driving assistance system.
  • the imaging device is equipped with the above-described optical lens.

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  • Lenses (AREA)

Abstract

L'invention concerne une lentille optique et un dispositif d'imagerie comprenant la lentille optique. La lentille optique comprend : une première lentille, une deuxième lentille, une troisième lentille, une quatrième lentille, une cinquième lentille, une sixième lentille et une septième lentille en séquence d'un côté objet à un côté image le long d'un axe optique, la première lentille pouvant avoir une puissance optique négative, et ayant une face côté objet convexe et une face côté image concave ; la deuxième lentille pouvant avoir une puissance optique négative, et a une face côté image concave ; la troisième lentille pouvant avoir une puissance optique négative ; la quatrième lentille pouvant avoir une puissance optique positive, et a une face côté objet convexe ; la cinquième lentille pouvant avoir une puissance optique positive, et a une face côté objet et une face côté image qui sont toutes deux convexes ; la sixième lentille pouvant avoir une puissance optique négative, et a une face côté objet et une face côté image qui sont toutes les deux concaves ; et la septième lentille pouvant avoir une puissance optique positive, et a une face côté objet convexe. La lentille optique présente au moins l'un des effets bénéfiques d'une haute résolution, d'une miniaturisation, d'une petite ouverture frontale, d'une bonne performance de température, d'un grand angle de champ de vision, etc.
PCT/CN2020/094046 2019-06-11 2020-06-03 Lentille optique et dispositif d'imagerie WO2020248877A1 (fr)

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US11796761B2 (en) * 2019-12-18 2023-10-24 Logitech Europe S.A. High resolution, wide FOV static lens assembly
CN114442267B (zh) * 2020-11-06 2024-01-19 亚洲光学股份有限公司 成像镜头
TWI815148B (zh) * 2021-07-20 2023-09-11 先進光電科技股份有限公司 光學成像系統
CN115508986B (zh) * 2022-11-16 2023-05-12 江西联益光学有限公司 光学镜头
CN115951482B (zh) * 2023-03-15 2023-08-01 江西联创电子有限公司 光学镜头

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CN103676093A (zh) * 2012-09-18 2014-03-26 株式会社理光 成像镜头、成像设备和信息装置
CN108761743A (zh) * 2016-07-13 2018-11-06 浙江舜宇光学有限公司 七片式广角镜头
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